Poor bub, silent reflux :-( I'm not an expert but I'd say no pattern would be due to the reflux. DD1 had severe reflux until around 8 mths old, she self regulated by becoming a 'snacker' & feeding every hour day & night. If say if you're ok with it go with it, he may be hungrier or extra tired on diff days so makes up for it, reflux is hard & hard to watch bub go through it so if you're not too tired maybe let him lead you & maybe write down what he does for a few days, you might see a pattern over a few days?? I only had DD1 to think about so I just went with what she needed but you have another one to think of & run around after so that might not suit you, good luck reflux is very hard :-)